Hi I have this problem writting an expression in polar form, I have no issue finding the correct absolute value, but the argument turns out wrong.
The expression is:
I wrote all the factors out in polar form, then added the arguments in the denominator and then subracted the arguments in the nominator, what do I do wrong?
Why don't you first simplify the mess? And I'm assuming you meant in the numerator:
Now simplify the above expression and you're on (note: I wrote down the principal argument in each case. In the second factor in the denominator you can write instead if you want all the arguments to be positive and in
First of all thanks to both of you for your help.
You are correct there should be an i there where ProveIt said.
Accutually I have to solve this in three different ways.
By simplifying a+bi
by rewritting it in polar form
By using (as tonio did) Eulers approach.
Also this has to be done without a calculator, (that probably means that the argument rational).
Anyway the issue is that I donīt understand what I do wrong with the polar form thing: I just took the arguments in the denominator that gave me:
then the arguments in the nominator:
and then substracted that gave me
but the correct answer is
not sure what Iīm doing wrong here...